#pragma once
#include<string.h>
#define SIZE 1024
#define FLUSH_NOW 0
#define FLUSH_LINE 1
#define FLUSH_ALL 2
typedef struct IO_FILE
{
    int fileno;
    int flag;
    //char inbuffer[SIZE];
    //int in_pos;
    char outbuffer[SIZE];
    int out_pos;
}_FILE;
_FILE *_fopen(const char*filename,const char *flag);
int _fwrite(_FILE *fp,const char *s,int len);
void _fclose(_FILE *fp);

